Nike Flex Runner Boys' Shoe Get your kid ready to run in the boys' Flex Runner sneaker from Nike. With its breathable mesh material and full bootie construction, his feet will stay well ventilated as well as secure. The flexible rubber outsole will match the movement of his foot and provide him with comfort and support. Mesh upper Slip-on entry Cushioned insole Tongue and heel pull tabs Flexible rubber outsole. Size 10C